Like every other problem humans have ever dealth with, we will get serious about it only when it is too late.

In the real world, people with lots of money get their way. That means the oil companies and gas companies and coal companies will get their way, and you and I will let them, because the stakes aren't high enough, for us, to do otherwise.

So Bill McKibben can organize all he wants -- while, of course, flying anywhere he needs to fly to at a moment's notice -- and there's no point pretending otherwise.

4°C here we come.

In fact, we'll be lucky to stop there.

The only salvation I can see is sucking CO2 out of the air and burying it somewhere. Let's fund R&D into that, and get the price down to maybe $100/tonne, and pay a couple three percent of our income to keep living like we do now.

"That means the oil companies and gas companies and coal companies will get their way, "

No,that means we, the consumers will get our way. Whoever you are, you and all like you are welcome to live off-grid and churn your own butter. And maybe you can post your articles during the day time, when your solar panels are producing electricity. The rest of us want reliable power, on demand, 24/7/365. Until you're ready to lead by example and turn off your grid connection, you have nothing to say to the rest of us.